开花植物栽培与杜松不动杆菌M-2菌株接种相结合修复含油土壤

Takamitsu Kai, Yuuki Okamoto, S. Murakami, M. Tamaki
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引用次数: 0

摘要

石油产品对土壤的石油污染已经成为一个巨大的环境问题。在本研究中,我们研究了在不同的植物生长阶段(播种期、早期和中期)接种杜松不动杆菌菌株M-2是否可以通过培养三种开花植物(含羞草、Gazania和Zinnia)来增强对石油污染土壤的修复。在油污染土壤中种植的Zinnia在播种时接种的生长显著优于未接种土壤。尽管在播种时接种的土壤中的总石油烃浓度名义上低于未接种的土壤,特别是在种植百日菊的情况下,但这种影响没有达到统计学意义。然而,对于所有三种测试植物,接种刺柏菌株M-2的土壤中的脱氢酶活性显著高于未接种的土壤。这些结果表明,观赏植物栽培(特别是Zinnia)和刺柏菌株M-2的接种相结合提高了石油污染土壤的植物修复效率。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Phytoremediation of Oil-Contaminated Soils by Combining Flowering Plant Cultivation and Inoculation with Acinetobacter junii Strain M-2
Oil contamination of the soil by petroleum products has become an enormous environmental problem. In this study, we examined whether remediation of oil-contaminated soils by cultivating three flowering plants (Mimosa, Gazania, and Zinnia) could be enhanced by inoculation with Acinetobacter junii strain M-2 at different plant growth stages (at sowing, at early growth, and at mid-growth). The growth of Zinnia cultivated in oil-contaminated soils inoculated at sowing was significantly superior to that in the non-inoculated soil. Although total petroleum hydrocarbon concentrations in soils inoculated at sowing were nominally lower than those in non-inoculated soils, especially in the case of Zinnia planting, the effect did not reach statistical significance. However, dehydrogenase activity was significantly higher in the soils inoculated with A. junii strain M-2 than in non-inoculated soils for all three plant species tested. These results demonstrate that a combination of ornamental plant cultivation (particularly Zinnia) and inoculation with A. junii strain M-2 increases the efficiency of oil-contaminated soil phytoremediation.
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